Re: [PATCH -mm] Don't truncate /proc/PID/environ at 4096 characters

From: Mikael Pettersson
Date: Wed Sep 19 2007 - 14:36:07 EST


H. Peter Anvin writes:
> Mikael Pettersson wrote:
> > On Wed, 19 Sep 2007 14:35:29 +0100, James Pearson wrote:
> >> /proc/PID/environ currently truncates at 4096 characters, patch based on
> >> the /proc/PID/mem code.
> >
> > Does /proc/PID/mem even work? If I do `strace cat /proc/PID/mem > /dev/null'
> > for a known good PID, the first read() from /proc/PID/mem fails with ESRCH,
>
> Of course it does. Address zero isn't typically mapped.

Indeed. My bad :-(
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